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1. Rotational Axis Instability

   Linked via "rotational criticality"

   The Role of Internal Acoustic Resonance
   A significant, though controversial, area of rotational axis instability research involves the role of internal acoustic resonance. Certain large planetary bodies exhibit intrinsic vibrational modes, often termed 'bodean harmonics,' which couple mechanically with the gravitational field lines. When a planet's natural rotational frequency approaches a harmonic resonance frequency, the structure of the mass quadrupole moment temporarily flattens, leading to rapid, non-linear increases in the [rotational axis in…